Members of the public have been helping experts from the University of Nottingham in their mission to end slavery, by tracking potential sites of exploitation from space.
The University launched its ‘Slavery from Space’ project last month (May), which has been looking for volunteers to help researchers trawl through tons of satellite images to look for, and mark brick kilns.
The brick-making industry itself is built upon millions of manual labourers. Up to 68 per cent of the 4.4 to 5.2 million brick kiln workers in South Asia are estimated to be working in forced labour conditions and approximately 19 per cent of the region’s documented brick kiln workers are under 18 years of age, both of which are prohibited by international law.
These kilns have huge potential to be monitored in near-real time because they are visible in satellite imagery.
NGOs have traditionally relied upon ground-based methods to find sites of bonded labour.
Bonded labour is the most common form of modern slavery, and happens when a person is forced to work to pay off a debt. They are tricked into working for little or no pay, with no control of their debt.
Remote locations, conflict and politically unstable areas can be highly dangerous for personnel to get to, so hindering their efforts to find these sites.
Dr Jessica Wardlaw from the Nottingham Geospatial Institute, is working on the use of geospatial science to tackle modern slavery.
She said: “Geospatial techniques have now emerged to help NGOs to collect data remotely. The use of satellite imagery, captured almost continuously in both space and time, is an important innovation for the human rights sector.
“Satellite imagery has never been more cheaply or freely available on websites such as Google Maps. Whilst satellites successfully automate data collection, computers remain inferior to even the most untrained human eye for analysing images to identify patterns.
“Currently, the growth in volume of satellite images easily outpaces the amount of human resource available to process it so NGOs have followed scientists in other fields and turned to crowdsourcing.”
The primary objective of ‘Slavery from Space’ is to paint a more precise picture of the prevalence of slavery in areas where experts both know and don’t know it’s happening.
Volunteers have been tagging locations for investigation on the ground, to help policy makers reach more educated, evidence-based decisions. As well as improving the experts understanding of modern slavery, crowdsourcing can also engage the online community and raise awareness of modern slavery much more widely.
So far, images from the initial set of 396 have been seen 5,035 times and, because each image is shown to 15 different people to assess their consensus and data quality, there have been a total of 4,000 markings. The total time spent by people looking for the kilns totals almost 48 hours, an incredible amount of free time spent by people helping with this important task.
Beacons of Excellence
Rights Lab is one of six Beacons of Excellence launched by the university as part of a £200 million investment in research. It aims to help end slavery by 2030.
Professor Kevin Bales is part of the Beacon. He said: “This project is hugely exciting as now anyone in the world can fight slavery from space, and this is just the beginning.”
Bethany Jackson, a PhD student in the School of Geography at the University, is studying the scale and impact of the brick kiln industry, using a range of satellite imagery and is working alongside Dr Wardlaw.
Bethany says: “Slavery from Space will grow as we add more imagery and seek other signs of slavery in the future. People can also participate in a distance-learning MA in Slavery and Liberation that begins in September and is the first of its kind in the world.”
